granville



(No Model.) -3 Sheets-Sheet 1-.

f Y A. GRANVILLE.

CYLINDER 0F HOISTING APUIARATUS.

101.260,384. Patented Ju1y4y18a'z.

lli-0 27x54 (No Model.) 3 Sheets-Sheet 2.

' A. GRANVILLE.

CYLINDER 0F HOISTKINGPPARATUS;

Patented July 4 Fly@ lLl 'P l IIIIIII Il 1I i rf Wzhz 65565.-

(No Model.)- 3 Sheets-Sheet 3'.

A. GRANVILLE; CYLINDER 0F HUNTING-APPARATUS. No. 260,384. Y Patented July 4, 1882.

l UNITED STATES PATENT OFFICE.

ARTHUR GRANVILLE, OF NEW YORK, N. Y..

CYLINDER oF Hols'rlNG APPARATUS.

SPECIFICATION forming part of Letters Patent No. 260,384, dated July 4;, 1882.

Application filed January 23, 1882. (No model.)

To all whom it may concern:

Be it known that I, ARTHUR GRANVILLE, of the city, county,and .State of New York, have invented certain Improvements in the Cylinders of Hydraulic Hoisting Apparatus, of which the following is a specification.

This invention relates to the cylinders of hydraulic engines designed for use in connection with so-called hoist7 or lift elevators, used for raising passengers and merchandise from one storyto another at dwellings,warehouses, Snc.; and the objectof the invention is to enable the packing of the piston employed in such cylinders to be adjusted, removed, replaced, or repaired without the necessity hitherto incurred of taking apart the cylinder and of disarranging to a greater or less degree the adjuncts thereof, which ordinarily necessitates the stopping of the working of the entire apparatus for several hours, and in some cases for several days, but which by my said invention is entirely avoided, together with the inordinate delays just referred to.

My said invention comprises a cylinder having at one end an extension beyond the normal stroke of the piston, and in which said extension is provided an opening extending around somewhat beyond the diameter of the cylinder, so that by drawing the piston beyond its normal stroke access is aii'orded thereto, for the purpose hereinbefore indicated, and a very great economy of time, labor, and expense in packing the pistons of such cylinders is secured.

Figure 1 is a side elevation and partial sectional view of a hydraulic elevator-cylinder and adjuncts embracing 'my said invention; and Fig. 2 is a side elevation of the cylinder and its adj uncts embracing my said invention, but of a construction somewhat modified as compared with that shown in Fig. l. Fig. 3 is a side view of the apparatus as seen from a side at right angles to that of Fig. 1. Fig. 4 is a side' view, representing another modification of one feature of my said invention.

E, of which one is placed upon each end of the shaft D, through which said wheels E, by suitable ropes, motion is given to the platform or car of the elevating or hoisting apparatus. These parts, however, may be substituted by any other suitable mechanism for hoisting or lowering the said platform or car, and are here shown only to indicate in` general the character of the adjuncts with which my said invention is ordinarily intended to operate.

The valves ot' the cylinder A are adj usted and operated in such manner that the usual stroke of the piston B does not carry the same outward beyond the point a of said cylinder. The cylinder itself, however, is constructed with'an extension, A', which projects beyond the limit a of the normal outward stroke of the piston B, and in one side of this extension A is formed a deepopening or slot, B', which extends transversely somewhat beyond one-half across the width ofthe cylinder, so that .the said extension A is open somewhat beyond one-half of its diameter.

During the normal operation of the apparatus the piston B will play back and forth without passing outward beyond the limit a. When,however, it is desired to reach the pack- -ing of the piston B in order to leplace, repair,

adjust, or otherwise manipulate the same, the

plate C is removed, and by turning the hoisting-drums E the said piston B is forced outward beyond the limit t and coincident with the upper portion of the opening B', thereby enabling the packing ot' said piston to be reached through the said opening B and adjusted, and also providing room and access to' permit the said pistou B to be taken apart and new packing substituted in place of the old, so that by the means described the packing may be examined when required, and as a result may easily be kept in good repair and in worki ing condition with a merely transient and unimportantstoppingof the machinery and without disarranging or taking down any of lthe permanentor moving portions ofthe apparatus, thereby effecting a very material economy, not only in time, labor, and expense in the work of repairing itself, but also avoiding the consequential loss which ordinaril y follows where an apparatus of the class indicated is caused to cease in its operation for any considerable IOO length of time-as, forexample, for two or three days, or even for a few hours.

In order to facilitate and to acertaiu extent to cheapen the manufacture of cylinders constructed according to my said invention, I propose in some cases to make them as represented in Fig. S-that is to say, with the cylinder A bored out in the usual manner, but originally made separate from the extension A', the latter being simply a rough casting somewhat larger in internal diameter than the cylinderA, the extension A andthe cylinder A being constructed With coincident flanges m and n, bolted together, as shown ati'. By this means the manufacture of such cylinders is very much facilitated and materiallylessenedin cost without impairing in any material degree the utility arising from the construction of the cylinders with the extension A' having the opening B' in one side thereof.

Fig. et represents a inodilication in the construction ofthe extension A', the latter being in this caso formed by short pillars S, which hold the head of the extension at the requisite distan ce from the adjacent end ofthe cylinderA.

The piston in its normal stroke will not pass beyond the said end of the cylinder, bntwhen moved farther outward, as hereinbefore explained, will be brought opposite the openings between the pillars S, so that easy access is afforded to the packing, for the purposes hereinbefore explained.

That I claim as my invention isl. In a hydraulic hoisting apparatus, the cylinder A, constructed with an extension, A', having therein an opening or openings arranged to afford access to the piston of the said cylinder when the said cylinder is moved outward from and beyond the limit ot' its normal stroke, substantially as and for the purpose herein set forth.

2. The extension A', formed of a separate casting, having in one side the openingB', and constructed with a flange, m, in combination with the cylinderA,constructed with a flange, u, whereby the extension and the cylinder may be united by the bolts i', all substantially as and for the purpose herein set forth.

ARTHUR GRANVILLE.

Witnesses:

ionnu'r W. MATTHEWS, Tiroir/ls E. CRossMAN. 

